Arnold’s Love Child : I am a BARBARIAN … Just Like My Dad!

Arnold Schwarzenegger’s love child grabbed a massive sword and a leather loin cloth … and sent one message to his dad — by dressing up as Conan the Barbarian.

14-year-old Joseph Baena hit up Frightfest at Magic Mountain in California last night … donning the costume made famous by the father who kept him in the dark for more than a decade.